MCC Enclosure

Protect electrical equipment and house your motor starters and VFDs in a custom motor control center enclosure designed to isolate arc flash hazards and pass electrical safety audits with zero compliance issues. We build to your exact specs and eliminate the standard 12-week lead time delays.

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Custom MCC Enclosure Specs

As a leading custom mcc enclosure manufacturer, every ShincoFab mcc electrical cabinet is precision-engineered to meet UL 845 standards and withstand extreme industrial environments.

High-ampacity busbars inside custom MCC electrical cabinet

Material & Structural Integrity

Built to support heavy VFDs and minimize cabinet torsion during lifting and installation.

  • Carbon Steel (10, 12, & 14 Gauge): Powder-coated finish for standard indoor/outdoor structural rigidity.
  • 304 Stainless Steel: Ideal for food & beverage washdown areas.
  • 316L Stainless Steel: The ultimate stainless steel mcc enclosure material, providing a highly corrosion resistant enclosure with maximum pitting resistance for marine, wastewater, and petrochemical applications.
  • 5052-H32 Aluminum: Lightweight alternative for roof-mounted or weight-restricted installations.

NEMA & IP Rating Matchup

Seam-welded and gasketed to guarantee environmental isolation.

  • NEMA 12 (IP54): Protects against circulating dust, falling dirt, and dripping non-corrosive liquids (Standard Factory Floor).
  • NEMA 3R (IP24): Vented for heat dissipation while protecting against rain, sleet, and external ice formation.
  • NEMA 4 (IP66): Watertight against hose-directed water (Heavy Industrial Washdown).
  • NEMA 4X (IP66): Specifying a nema 4x mcc enclosure guarantees a watertight and corrosion resistant solution (Requires 304/316L SS or Aluminum).

Busbar & Electrical Integration Readiness

Precision-punched mounting systems designed for rapid electrical assembly.
  • Busbar Materials: Bare electrolytic copper or Tin-plated copper (prevents oxidation in high-humidity H2S environments).
  • Ampacity Accommodations: Structural bracing capable of supporting horizontal/vertical buses from 600A up to 3200A+.
  • SCCR Integrity: Bracing and standalone structural strength designed to withstand short-circuit current ratings (SCCR) of 65kA, 85kA, or 100kA.

Door & Compartment Configurations

Designed for operator safety, arc flash containment, and rapid maintenance.
  • Draw-Out Compartments (Buckets): Our drawout mcc panel enclosure designs feature precision-formed guide rails to allow for hot-swappable motor starter units without de-energizing the main bus.
  • Door Types: Overlapping doors (for wider drive spaces) or center-post multi-door layouts.
  • Hardware: Heavy-duty concealed hinges and 3-point padlocking handles for strict LOTO (Lockout/Tagout) compliance.

Real-World Solutions to MCC Integration Headaches

At ShincoFab, we don’t just fold metal. We engineer enclosures designed to reduce installation time, protect expensive drives, and keep your operators safe.
Large cable terminations in custom MCC electrical enclosure

Ample Cable Termination Space to Stop Fighting the Wire

  • The Problem: Standard off-the-shelf enclosures never leave enough room for bottom/top entry cable bending, leading to installation delays and stressed lugs.
  • Our Solution: We engineer our enclosures with oversized, removable gland plates and strictly adhere to NEC wire-bending space requirements. Your field technicians will have ample room to maneuver hydraulic crimpers and easily land stiff 500 MCM or 750 kcmil cables without bruising their knuckles or stressing the terminations.
CNC punching thermal louvers for custom MCC electrical enclosures

Advanced Thermal Management to Eliminate Nuisance Tripping

  • The Problem: High density VFDs and soft starters generate massive heat. Trapped heat leads to drive derating, nuisance tripping, and costly plant downtime.
  • Our Solution: We treat thermal management as a structural priority. Send us your total heat load (BTU/hr or Watts), and we will precision cut and integrate the necessary thermal controls. These include strategic rainproof louvers, forced air blower kits, and structural reinforcements for mounting 60,000 BTU/h heavy duty NEMA 4X closed loop air conditioners.
Segregated compartments in custom MCC for arc flash protection

Arc Flash Protection and Safety Compliance for Audit Success

  • The Problem: Exposing maintenance personnel to arc flash hazards and risking red flags during strict electrical safety audits.
  • Our Solution: Built to exceed NFPA 70E and IEC 61439 standards. We offer fully segregated busbar compartments (up to Form 4b separation) and rigid dead-front interior panels. If a fault occurs, our structural barriers isolate the blast, preventing arc propagation to adjacent buckets. We keep your people safe and ensure you pass your inspections the first time.

Future-Proof Modularity to Expand Without Voiding Your UL Listing

Plants grow and motor loads change. Don’t buy a rigid enclosure that boxes you in. We engineer your MCC to scale seamlessly for next quarter’s expansion.

  • Zero-Drill Capacity Expansion: Field-drilling creates metal shavings, the #1 cause of catastrophic busbar shorts. We engineer your enclosure with pre-punched gasketed blanking plates. You can add up to 10% more motor starters later without ever bringing a drill onto the plant floor.
  • Plug-and-Play Modular Buckets: Adding 5 new motors for a conveyor line? Our standardized guide-rail and stab-in systems allow your technicians to slide in new buckets and terminate wires in minutes, drastically reducing scheduled downtime.
  • 100% Compliance Retention: Modifying a standard enclosure in the field instantly voids its UL 845 and NEMA ratings. Because our spare spaces and modular knockouts are pre-engineered into the original certified drawings, your enclosure remains fully compliant, no matter how you populate it later.
Expandable modular wiring in custom motor control center enclosure

Procurement and Logistics Solutions to Eliminate Supply Chain Risk

The engineering is done. Now it’s about hitting your project deadlines without freight damage or on-site installation nightmares.
Knock-down custom MCC enclosure panels on a shipping pallet

3-Week Lead Times (Not 8-12 Weeks)

The industry standard for custom MCC enclosures is a frustrating 8 to 12 weeks. We know that waiting on an enclosure halts your entire electrical integration schedule. Because we keep strategic raw material inventory (304/316L and Carbon Steel) on the floor, we ship standard configurations in just 3 weeks. You hit your project milestones, every time.

Knock-Down (Flat-Pack) Options for Retrofits

Modifying an older facility? When you need to install a motor control center enclosure but a fully welded 90 inch tall cabinet will not clear standard plant doors or navigate tight basement corridors, we have the solution. If access is an issue, we ship your enclosure in a precision engineered knock down flat pack configuration. Your riggers can move it piece by piece into the electrical room and bolt it together on site. This modular approach completely preserves your structural integrity and NEMA ratings.

Zero Damage Freight and Rigging Guarantee

A dented cabinet isn’t just an aesthetic problem; it compromises the door seal and instantly voids your IP or NEMA rating. We don’t just wrap our enclosures in shrink-wrap and hope for the best. We use custom heavy-duty timber crating, shock-absorbing skids, and integrate fully welded heavy duty lifting lugs for any drop-over mcc enclosure with lifting lugs requirement. Whether your crew is using a forklift or an overhead crane, your enclosure arrives and installs exactly as it left our factory in perfect condition.

Hard Proof of Tested Certified and Precision Built Enclosures

Don’t risk your facility’s uptime on unverified metalwork. Here is the hard data, manufacturing tolerances, and certification proof you need to confidently justify your spec.

Fully Type Tested Assemblies TTA for Zero Guesswork

We don’t rely on extrapolated data or the assumptions of Partially Type-Tested Assemblies (PTTA). Our MCC enclosure structures undergo rigorous, documented physical testing for short-circuit withstand strength (SCCR), temperature rise limits, and dielectric properties. When you specify our enclosure, your safety and compliance are backed by empirical, auditable data.

Laser Cut Precision of ± 0.05mm for Perfect Conduit Alignment

Field electricians despise misaligned knockouts. By utilizing advanced CNC fiber lasers (Trumpf/Amada), we hold fabrication tolerances to an unforgiving ± 0.05mm. As a result, your rigid field conduits, cable trays, and bus duct connections will line up perfectly with our factory cutouts every single time. This means no struggling, no crowbars, and no field modifications.

Multi Step Industrial Finishing for NEMA Ratings That Last

A rusted cabinet doesn’t just look bad, it fails environmental inspections. We utilize a highly controlled, multi-step pretreatment process followed by a VOC-compliant alkyd industrial enamel or heavy-duty polyester powder coat. It aggressively resists chalking, UV degradation, and chemical pitting. Your enclosure will maintain its structural integrity and NEMA 4/4X seal long after the internal VFDs become obsolete.

CNC fiber laser cutting precision MCC enclosure sheet metal

100% Custom. 100% UL Compliant. Zero Field Modifications.

Stop choosing between fast lead times and electrical safety. We fabricate your enclosure to match your exact motor schedule and thermal load, ensuring perfect knockout alignment and guaranteed audit success—without the industry-standard 12-week wait.

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Frequently Asked Questions

Clarify your doubts about UL compliance, custom fabrication limits, and lead times before requesting your quote.
You mention a 3-week lead time. Is that actually guaranteed?

Yes. We achieve this by stocking standard raw materials (10 to 14 gauge Carbon Steel, 304/316L) in house and utilizing modular CAD templates. While heavy customizations or specific color matching may add one to two weeks, we will give you a firm guaranteed ship date upfront with your quote. We always stick to that date.

Absolutely. Field-drilling voids certifications, but factory modifications do not. All of our prepunched knockouts, removable gland plates, and thermal cutouts are engineered entirely within the parameters of our UL 845 and NEMA certification files. The cabinet you receive is 100% compliant and ready for your safety audit.

Send us your motor schedule and total Watt loss data. We will calculate the exact BTU/h required and integrate the necessary thermal solutions. These solutions range from standard rainproof louvers and forced air blowers for NEMA 1/3R applications to structural reinforcements and cutouts for mounting heavy duty closed loop air conditioners in NEMA 4/4X environments.

No. If a standard 90 inch tall welded enclosure will not clear your plant doors or tight corridors, we offer a precision engineered knock down flat pack configuration. Your riggers can transport it piece by piece and bolt it together on site without sacrificing the structural rigidity or environmental seal of the enclosure.

It depends on the corrosives present. For standard food and beverage washdown areas, 304 Stainless is usually sufficient. However, if your enclosure will be exposed to marine environments, wastewater treatment gases (like H2S), or petrochemicals, we strictly specify 316L. The added molybdenum in 316L provides maximum resistance against chloride pitting and crevice corrosion.

The Engineer’s Integration Toolkit & Rapid Quoting

Still in the design phase? Grab the data you need to finish your layout. Ready to customize your mcc enclosure or order a custom mcc enclosure online? Send us your specs for an immediate turnaround.

Whatsapp

+86 13392819510

Address

Building 1, No.8, Second Street, Huangjiang Town,
Dongguan City, Guangdong Province

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ShincoFab specializes in precision sheet metal fabrication, delivering high-quality custom metal solutions to clients worldwide with advanced technology and expert craftsmanship.

Contact Info

  • Building 1, No.8, Second Street, Huangjiang Town, Dongguan City, Guangdong Province
  • Whatsapp: +86 13392819510
  • [email protected]

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Ready to start your sheet metal project? Contact the ShincoFab team to discuss your custom fabrication requirements. We support you through design, manufacturing, and delivery—at every stage.

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